Hi Stephan

Thanks for such a detailed and thorough reply it is very much appreciated :)

I've started using the work around you suggested of scaling the first image in every stack.
I did this in the compositor I use 'after effects' and scaled the first 500 images of my 2500 image sequence by 98 ...

Hi Stas
Yes that's it, I've noticed the order flips every so often.
I can't see 'auto sorting of source files' as an option when Batch stacking, so I've de-selected it and selected ascending instead in a render window.
When re batch stacking It is still switching the order when I check each output ...

actually its a scaling aberration , every so often a random frame will scale up larger than the rest

Hi ,I'm filming a few small objects on a servo controlled turntable, then repeating the shots at differing depths of field.
The batch stacking is working a treat beautiful sharp images , nice work.

When I view all these stacked images in sequence there is quite a bit of miss alignment between ...